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NetX Research

Network Xpress conducts on-going research in the areas of computer communications protocols -- their design, implementation, performance measurement, and adaption to custom environments.

Issues of current interest include:

  • High-performance implementations -- XTP can achieve 96 Mbps throughput over a 100 Mbps FDDI network

  • Effective error repair -- selective retransmission can significantly improve performance in lossy environments such as the Internet and satellite channels

  • Multicast algorithms for reliable data delivery and group management -- XTP handles multicast receiver groups with up to 100 members with ease; it is a research issue to handle reliable data delivery to thousands of receivers

  • "Big fat pipes" -- XTP's sequence space of 2^64 bytes allows high-bandwidth and/or long-latency networks to operate with a very large sliding window for outstanding, unacknowledged data

  • Secure data transmission -- unlike TCP, XTP can transmit in one direction with absolutely no reverse channel required (physically or logically). This is ideal for, say, a "secret" level application writing data to a "top secret" application since there is no pathway for "top secret" information to flow in the opposite direction

Contact us if you would like to join our on-going research discussions.


Network XpressTelephone: (804) 293-8066
webmaster@netx.comFAX: (804) 293-8414